PSG midfielder Marco Verratti says he owes it all to Cagliari coach Zdenek Zeman.

Zeman brought through Verratti at Pescara.

Verratti said: "The year with Zeman changed my life. Before that I only came back to defend if someone was hurt.

"Then I started to think about football 24 hours a day, the little things that you can improve in your game to make a difference.

"It became a job, a responsibility. Nobody works like him.

"Sometimes, after training, I was throwing up from the effort of 20 miles of running. It's like military training."